// This file is part of OpenTSDB.
// Copyright (C) 2017 TeleDB Development Group.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 2.1 of the License, or (at your
// option) any later version.  This program is distributed in the hope that it
// will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
// General Public License for more details.  You should have received a copy
// of the GNU Lesser General Public License along with this program.  If not,
// see <http://www.gnu.org/licenses/>.
package net.opentsdb.utils;

import com.google.common.base.Strings;

/**
 * description: 字符串操作
 * author: zhuzhipeng
 * create: 2019-05-21 10:53
 */
public class CharUtils {

    /**
     * 判断是否为数字
     *
     * @param str
     * @return
     */
    public static boolean isNumeric(String str){
        if(Strings.isNullOrEmpty(str)) return false;

        for(char c: str.trim().toCharArray()){
            if(!Character.isDigit(c)) return false;
        }

        return true;
    }
}

